Only 30% of a coffee bean is soluble in water, and many brewing methods aim to extract significantly less than that. So of the 1.6 billion pounds of coffee Americans consume in a year, more than 1.1 ...

But that’s the nature of the beast—coffee shops like Starbucks are often meant for those on the go. Cold drinks like Starbucks Refreshers or the latest Starbs Valentine’s Day menu are the ones that ...